MAX3440EESA+ datasheet by Maxim Integrated Products

MAX3440EESA+ Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for the MAX3440EESA+ to minimize EMI?
  A good PCB layout for the MAX3440EESA+ involves keeping the input and output traces separate, using a solid ground plane, and placing the device close to the power source. Additionally, using a shielded enclosure and minimizing the length of the input and output cables can help reduce EMI.
• How do I ensure the MAX3440EESA+ is properly powered up and powered down?
  To ensure proper power-up and power-down of the MAX3440EESA+, make sure to follow the recommended power-up sequence, which is to apply the input voltage (VIN) before enabling the device (EN). During power-down, disable the device (EN) before removing the input voltage (VIN).
• What is the maximum capacitive load that the MAX3440EESA+ can drive?
  The MAX3440EESA+ can drive a maximum capacitive load of 10nF. Exceeding this limit may cause instability or oscillations in the output voltage.
• How do I adjust the output voltage of the MAX3440EESA+?
  The output voltage of the MAX3440EESA+ can be adjusted by using an external resistor divider network connected to the FB pin. The output voltage can be calculated using the formula: VOUT = 1.25V x (R1 + R2) / R2.
• What is the thermal derating of the MAX3440EESA+?
  The MAX3440EESA+ has a thermal derating of 6.4mW/°C above 25°C. This means that the device's power dissipation must be reduced as the ambient temperature increases to prevent overheating.